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期 刊 ：生态学报 2008年 28卷 5期 页码：2417~2417～2423

关键词：磷形态；沉积物；乳山湾；

Keywords:phosphorus forms, sediment, Rushan Bay,

摘 要 ：对2003年8月在乳山湾东流区采集的沉积物样品中的不同形态磷的平面和垂直分布特征进行了分析，并探讨了这些磷的形态分布与贝类养殖的关系，结果表明，不同形态磷在贝类高密度养殖区含量大于低密度养殖区。养殖区的垂直分布比较复杂，在1~20cm范围含量均出现较大波动，这与贝类养殖活动有关。Fe-P、Al-P含量出现较大波动还与污染程度有关，Or-P还与浮游植物活动有关。养殖区Ex-P、Fe-P、NAIP占TP的平均百分含量大于非养殖区，De-P、Oc-P恰好相反。Ca-P是乳山湾沉积物中含量最高的磷形态，Fe-P 和Or-P是最主要的两种生物可获得磷。TP、Or-P含量在养殖区与非养殖区之间没有显著差异，养殖区Fe-P含量高于非养殖区，3种磷的平均含量一般大于其它海区。非生物可获得磷约占TP的60%左右。

Abstract:The horizontal and vertical distribution of different phosphorus forms was analyzed in sediment samples collected from Eastern Rushan Bay in August 2003 and the relationship was discussed between the distribution of different phosphorus forms and the bivalve culture. The result showed that the contens of different phosphorus forms in high density cultivating areas were usually higher than those of low density cultivating areas. The vertical distribution of the different phosphorus forms in the cultural areas was complex, their contents were not steady in 1-20cm layer, these were influenced by the bivalve culture. Fluctuation of the contents of Fe-P and Al-P were also influenced by pollution, Or-P was also influenced by activity of phytoplankton. The average percentage of Ex-P、Fe-P、NAIP in TP in the cultural areas was higher than those in the natural areas, De-P and Oc-P were the opposite. The content of Ca-P was the highest, Fe-P and Or-P were the prevalent forms of NAIP. The contents of TP and Or-P had no significant difference between two areas, The content of Fe-P in the cultural areas was higher than that of the natural areas. The contents of three phosphorus forms were general higher than the other areas. Non-bioavailable phosphorus accounted for about 60 percent of TP.

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